CPL » Human Factors » Environmental Hazards
34.36 Environmental Hazards
Toxic Hazards in Aviation
Aircraft and aviation operations involve a number of substances that may be toxic or harmful to the human body.
Examples include fuel, lubricating oils, hydraulic fluids, exhaust gases, de-icing fluids, chemical sprays and fire-extinguishing agents.
Hazardous substances may enter the body through:
- Inhalation into the lungs.
- Absorption through the skin.
- Ingestion through the digestive system.
- Contact with the eyes.
34.36.2 Describe the symptoms, effects and immediate treatments for the following hazards present in the aviation environment:
(a) Carbon monoxide
Carbon monoxide (CO) is a colourless, odourless and tasteless toxic gas produced by incomplete combustion.
In piston-engine aircraft, CO may enter the cockpit through a leaking exhaust system, particularly where cabin heating uses air warmed around the exhaust system. FAA
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